Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Components of Income (Loss) before Income Taxes

The components of loss before income taxes consist of the following:



Year ended December 31,	2019			2018
Income (loss) before income taxes:
U.S.	$	(32,953	)	$	(419,964	)
Foreign	4,234			(7,130		)
Loss before income taxes	$	(28,719	)	$	(427,094	)

Income Tax Provision

The income tax provision (benefit) consists of the following:



Year ended December 31,	2019				2018
Current tax provision (benefit):
Federal		$	2,501			$	(7,991	)
State	197				1,901
Foreign	8,569				8,798
Total current tax provision	11,267				2,708
Deferred tax benefit:
Federal	(6,150			)	(23,956			)
State	(1,575			)	(7,640			)
Foreign	(9,677			)	(3,541			)
Total deferred tax benefit	(17,402			)	(35,137			)
Total income tax benefit		$	(6,135	)		$	(32,429	)

Reconciliation of Federal Statutory Rate to Effective Income Tax Rate

A reconciliation of the federal statutory rate to our effective income tax rate is shown below:



Year ended December 31,	2019		2018
Federal statutory rate	21.0	%	21.0	%
Increases (decreases) in the rate resulting from:
State income taxes, net of federal income tax impact	6.6	%	1.5	%
Foreign income taxes	(3.7	)%	(0.1	)%
Valuation allowance	(1.4	)%	—	%
Research and development credit	9.8	%	0.2	%
Uncertain tax positions	(5.0	)%	0.2	%
Tax Reform and other prior period adjustments	—	%	0.4	%
Restricted stock vestings	(6.7	)%	(0.2	)%
Goodwill and intangible asset impairment charges	—	%	(14.2	)%
Other	0.8	%	(1.2	)%
Effective income tax rate	21.4	%	7.6	%

Tax Effects On Deferred Tax Assets And Deferred Tax Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below:



December 31,	2019			2018
Deferred tax assets:
Employee benefit plans	$	26,401		$	24,733
Accrued liabilities not currently deductible	24,441			25,659
Finance charges	2,678			2,661
Lease liabilities	42,077			3,694
Allowance for losses on accounts receivable	4,157			3,890
Net operating loss carryforwards	8,394			9,098
Goodwill	—			1,048
Outside basis difference	12,408			—
Interest limitation	12,905			4,473
Derivatives	5,057			1,788
Other	10,611			7,797
Total deferred tax assets	149,129			84,841
Less: valuation allowances	(14,282		)	(1,473		)
Net deferred tax assets	134,847			83,368
Deferred tax liabilities:
Merchandise inventories	42,872			44,015
Goodwill	296			—
Property and equipment	32,689			37,443
Right-of-use assets	39,043			—
Computer software	9,032			10,177
Insurance	1,082			767
Intangible assets	35,451			29,414
Withholding tax liabilities	6,965			7,963
Other	697			342
Total deferred tax liabilities	168,127			130,121
Net deferred tax liability	$	(33,280	)	$	(46,753	)

Reconciliation of Changes In Unrecognized Tax Benefits

A reconciliation of the changes in unrecognized tax benefits from the beginning to the end of the reporting period is as follows:



	2019				2018
Unrecognized tax benefits at January 1,		$	9,568			$	13,585
Increases for positions taken during current period	394				1,035
Increases for positions taken during prior periods	1,629				29
Decreases for positions taken during prior periods	—				(142			)
Lapse of statute of limitations	(71			)	(4,939			)
Unrecognized tax benefits at December 31,		$	11,520			$	9,568